package Test01;

public abstract class MilkTea {
    public abstract void MilkTea();

    public abstract void addstep();

    public void step(){
        System.out.println("准备牛奶和茶叶");
        System.out.println("1.加茶叶");
        System.out.println("2.加牛奶");
        System.out.println("3.打包");
    }

}
